AT87C52X2-3CSUV Atmel, AT87C52X2-3CSUV Datasheet - Page 35
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AT87C52X2-3CSUV
Manufacturer Part Number
AT87C52X2-3CSUV
Description
Microcontrollers (MCU) Microcontroller
Manufacturer
Atmel
Datasheet
1.AT87C52X2-3CSUV.pdf
(55 pages)
Specifications of AT87C52X2-3CSUV
Data Bus Width
8 bit
Program Memory Type
EPROM
Program Memory Size
8 KB
Data Ram Size
256 B
Interface Type
UART
Maximum Clock Frequency
30 MHz
Number Of Programmable I/os
32
Number Of Timers
3 bit
Operating Supply Voltage
5 V
Maximum Operating Temperature
+ 70 C
Mounting Style
Through Hole
Package / Case
PDIL-40
Minimum Operating Temperature
0 C
Lead Free Status / Rohs Status
No
Signature Bytes
4184I–8051–02/08
12,000 µW/cm
An exposure of 1 hour is recommended with most of standard erasers.
Erasure of the EPROM begins to occur when the chip is exposed to light with wave-
length shorter than approximately 4,000 Å. Since sunlight and fluorescent lighting have
wavelengths in this range, exposure to these light sources over an extended time (about
1 week in sunlight, or 3 years in room-level fluorescent lighting) could cause inadvertent
erasure. If an application subjects the device to this type of exposure, it is suggested
that an opaque label be placed over the window.
The TS80/87C52X2 has four signature bytes in location 30h, 31h, 60h and 61h. To read
these bytes follow the procedure for EPROM verify but activate the control lines pro-
vided in Table 31. for Read Signature Bytes. Table 35. shows the content of the
signature byte for the TS80/87C52X2.
Table 21. Signature Bytes Content
Location
30h
31h
60h
60h
60h
61h
2
rating for 30 minutes, at a distance of about 25 mm, should be sufficient.
Contents
ADh
2Dh
FFh
58h
57h
20h
Comment
Manufacturer Code: Atmel
Family Code: C51 X2
Product name: TS80C52X2
Product name:TS87C52X2
Product name: TS80C32X2
Product revision number
35